Brown CS Blog

PackUV: Video-Native Representations For Streaming 4D Scenes

A series of images showing how PackUV uses Gaussian UV fitting and produces one representation with all attributes that's 100% video-codec compatible

Imagine watching a concert not from a fixed camera angle, but from any angle. The catch? Volumetric video is incredibly hard to store and stream, and you can have the most photorealistic 4D scene in the world, but if you can't get it to a viewer efficiently, it's stuck in a lab. Our work, PackUV, tackles exactly this problem.

VideoGPA: Distilling Geometry Priors For 3D-Consistent Video Generation

Eight images of a hallway that demonstrate VideoGPA's superiority over a baseline model

In this paper, we leverage a 3D Geometric Foundation Model to build a self-supervised pipeline that evaluates 3D consistency in AI-generated videos. By integrating our video generation model with reinforcement learning, we are able to generate highly 3D-coherent and realistic videos. This approach significantly reduces morphing, flickering, and artifacts, outperforming current state-of-the-art methods.

A History Of The Sunlab

The Sunlab is no longer with us. Students who graduated in the past decade or so think of it mainly as a place where they could use desktop computers running Linux and attend TA hours and help sessions. But it started as something different.

Designing A Language Sport

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This summer, on a grant from Brown's Startup Fellowship program, Eric Xia developed www.word.golf with Julian Beaudry, a fellow CS undergraduate. They've done their best to follow a spirit of inquiry, creating a project which challenges the imagination while retaining a sense of familiarity and playfulness.

Toward Responsible AI In Mental Health: Centering Human Experience In Sociotechnical Design

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Brown University doctoral student Zainab Iftikhar is the friend people turn to when they need to talk. 

“My family jokes that I’m the ‘therapist friend’ everyone calls when they have a problem,” Iftikhar said. 

Her capacity for caregiving has informed her research at Brown, where she is focused on exploring technology’s therapeutic strengths and weaknesses to find ways people can best use AI to support social and mental health. Her research has spotlighted humans’ inherent ability to offer and detect empathy, which is something that chatbots, text-based therapists and other artificial intelligence systems don’t do well, she said.